Structure to support Time-of-Use in conjunction with Consumption Block Rates is not apparent.
The Consumption Block is represented by type blockPowerFullRequirementsProductDescription which is a type of productDescription referernced by the wsCalendar-attach.
The interval and gluon structures are parallel in emixBase to the productDescrpiton. I think the interval and gluon can represent the same structures as part of a recursive structure. If these contain the date/time ranges that would have the productDescription embedded in the the list, then I think this could represent the TOU with each occurance containing the block rates.